.layui-container{}

.top { height: 150px; }
.top h1 { font-size: 40px; line-height: 150px; font-weight: bold; text-align: center; }

.mid {width: 100%; height: 900px; }

.mid_left{background-color: cornsilk;height: 900px;}
.mid_right{background-color: darkgray; height: 900px;}
.mid_right iframe{height: 900px;}